Water Quality in ADAK, AK (99546)
EPA violation data for public water systems serving ZIP code 99546.
53
Total Violations
16
Health-Based
37
Monitoring / Reporting
53
Resolved
What does this mean?
53 of 53 violations have been resolved. 16 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 37 are monitoring or reporting violations (missed testing deadlines or late paperwork — not necessarily a water quality issue). Not all violations mean your water is unsafe. The EPA requires reporting even for minor administrative issues.
Violations Detail (53 total)
| Contaminant | Category | MCL Limit | Measured | Date | Status | Health Effects |
|---|---|---|---|---|---|---|
| Chlorine | Monitoring | N/A | N/A | Aug 31, 2025 | Resolved | Eye and nose irritation; stomach discomfort |
| Chlorine | Monitoring | N/A | N/A | Jun 30, 2025 | Resolved | Eye and nose irritation; stomach discomfort |
| Total Haloacetic Acids (HAA5) | Health-Based | N/A | 0.068 | Jun 30, 2025 | Resolved | N/A |
| Surface Water Treatment Rule | Monitoring | N/A | N/A | Jun 30, 2025 | Resolved | N/A |
| Surface Water Treatment Rule | Health-Based | N/A | N/A | Apr 30, 2025 | Resolved | N/A |
| Surface Water Treatment Rule | Health-Based | N/A | N/A | Apr 30, 2025 | Resolved | N/A |
| Surface Water Treatment Rule | Health-Based | N/A | N/A | Apr 30, 2025 | Resolved | N/A |
| Surface Water Treatment Rule | Health-Based | N/A | N/A | Mar 31, 2025 | Resolved | N/A |
| Surface Water Treatment Rule | Health-Based | N/A | N/A | Mar 31, 2025 | Resolved | N/A |
| Surface Water Treatment Rule | Health-Based | N/A | N/A | Mar 31, 2025 | Resolved | N/A |
Lead & Copper Levels
Violation Timeline
2025(19)
Chlorine
27
Chlorine
27
Total Haloacetic Acids (HAA5)
02
Surface Water Treatment Rule
36
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
Chlorine
27
Surface Water Treatment Rule
36
Chlorine
27
Chlorine
27
Surface Water Treatment Rule
36
Chlorine
27
Chlorine
27
Surface Water Treatment Rule
36
Surface Water Treatment Rule
36
2024(9)
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
Surface Water Treatment Rule
36
Surface Water Treatment Rule
36
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
Surface Water Treatment Rule
36
How Does This Compare?
ADAK (99546) has 53 recorded violations, including 16 health-based. All violations have been resolved, which is a positive sign for current water quality. Consider testing your tap water independently for added peace of mind.
Recommended Water Filters
Based on the contaminants detected in your area, these filter types may help improve your water quality.
Activated Carbon Filter
Excellent for removing chlorine, chloramine, and disinfection byproducts like THMs and HAAs. Available as pitcher filters, countertop, or under-sink units.
Targets:THMs, HAAs, Chlorine, Chloramine, Taste & Odor
Look for:NSF/ANSI 42 & 53 certified
UV Water Purifier
Uses ultraviolet light to neutralize bacteria, viruses, and parasites without chemicals. Ideal for homes with microbial contamination concerns.
Targets:E. coli, Coliform, Giardia, Cryptosporidium
Look for:NSF/ANSI 55 (Class A) certified
Always look for filters certified by NSF International for the specific contaminants you want to remove.